Chemical Engineering MCQs

Page No. 314

Traces of tar fog present in the coke oven gas is removed by_________________?


aCyclone separator

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bWet packed scrubber

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cElectrostatic precipitator

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dWashing with monoethanolamine

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C/H ratio is the maximum in case of_________________?


aCoal

✓


bFurnace oil

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cNatural gas

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dNaphtha

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View Answer Coal

The bright glow of a combustion process is the characteristic of ______________ temperature oxidation of coal?


aFast & high

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bSlow & low

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cSlow & high

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dFast & slow

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View Answer Fast & high

Largest constituent of blast furnace gas is__________________?


aN2

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bCO

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cCO2

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dH2

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View Answer N2

A travelling grate stoker is meant for the efficient burning of ______________ coal?


aCaking

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bPulverised

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cNon-caking

✓


dHigh ash

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View Answer Non-caking

Lurgi coal gasifier is a pressurised ______________ bed reactor?


aMoving

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bFixed

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cFluidised

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dEntrained

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View Answer Moving

The fuel ratio of a coal is__________________?


aThe ratio of its percentage of fixed carbon to that of volatile matter

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bHelpful in estimation of its rank

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cBoth A. and B.

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dNeither A. nor B.

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View Answer Both A. and B.

Presence of free moisture in coal is most disadvantageous during_________________?


aIts pulverisation (as it requires more power)

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bCombustion of fire slacks on the grates

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cHandling (e.g. when emptying wagons)

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dNone of these

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Fuel for a nuclear reactor (thermal) is ____________________?


aUranium

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bPlutonium

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cRadium

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dNone of these

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View Answer Uranium

The calorific value of ‘LPG’ (50% propane + 50% butane) is about ______________ kcal/Nm3?


a5000

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b25,000

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c10,000

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d15,000

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View Answer 25,000

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